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IMG 2020
Feature F-6296 Overload Control support uses the SIP OPTIONS message to control SIP signaling traffic between two SIP networks or entities. To accomplish this, the SIP method OPTIONS is utilized. Feature F-6296 uses this method to perform the following functions:
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Before proceeding, it is assumed that the Basic Configurations topic has been applied as well as the SIP Signaling functionality.
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Right click on the Dialogic object and select New External Network Elements. The External Network Elements object is a container object and no configuration is needed here. For more information on this object refer to the External Network Elements topic.
Right click on External Network Elements and select New External Gateways. The External Gateways object is a container object and no configuration is needed here. For more information on this object refer to the External Gateways topic.
Right click on External Gateways object and select New External Gateway. Enter a name that identifies this gateway.
Select SIP from drop down menu in the Protocol field.
Select either Gateway IP Address or Gateway Host name from the Address Type field. In this procedure the IP Address will be how the IMG 2020 will communicate with external gateway.
Enter the IP address of the external gateway in the IP Address field.
Select the SIP Profile that will be utilized from the drop down menu of the Profile field . For more information on configuring the remaining fields in the External Gateway object, refer to the External Gateway topic.
Configure SIP Channel Group and
Right click on the Dialogic object and select New Routing Configuration. The Routing Configuration object is a container or parent object and no configuration is required here. Refer to the Routing Configuration topic for more information on this object.
Right click on the Routing Configuration object and select New Channel Groups. The Channel Groups object is a container object for multiple channel groups. No configuration is needed here. For more information refer to the Channel Groups topic.
Right click on the Channel Groups object and select New Channel Group. In the Name field, either except the default name or enter a name that identifies the Channel Group being configured. In this procedure, the channel group was labeled ChGrp1_SIP.
Select SIP from the drop down menu in the Signaling Type field.
Select the Incoming and Outgoing IP Profiles from drop down menus. The IP Profile was initially created in the Basic Configurations topic. For more information on configuring the remaining fields in the channel group object, refer to the Channel Group topic.
Right click on the SIP Channel Group and select New IP Network Element. Select from drop down menu the EXTERNAL gateway configured in the Configure External Gateway section above. This will be the external gateway that the channel group being configured will communicate with. Refer to the IP Network Element topic for more information on this object.
Right Click on the IP Network Element and select New Node Association.
In the Node field, select from drop down menu the IMG 2020 node that the OPTIONS feature is getting configured on.
The Service IP Address field will display all the SIP IP addresses configured above in its drop down menu. Select the IP address that will be utilized for SIP Signaling.
The Media Packet Facility field will display all the packet facilities configured on this IMG 2020 node. Select the Packet Facility that will be utilizes to communicate with the External Gateway configured above. At this point, the SIP Signaling IP address selected in step 9 will control the messaging for the Packet Facility selected. Refer to the SIP Signaling - Node Association object for more information on configuring the Node Association object.
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Right click on the Node Association object and select New Overload Control. Select the functionality required from the drop down menus of each field. Refer to the information above as well as the SIP Signaling - Overload Control topic for information of configuring each of the individual fields.
The Channel Groups object will now have an yellow exclamation point displayed in the configuration tree icon. The exclamation point indicates that the configuration has been created but not yet sent to the node. Click on the Channel Groups object and then click on the Download Resource Tables button in the Channel Groups object pane. The configuration will now get sent to the IMG 2020 node and the yellow exclamation point will change to a green check.
The Overload functionality is now configured within a SIP channel group and this channel group is configured to communicate with an external gateway. Overload Control will now function between the SIP channel group and the external gateway configured. At this point routing and translations can be configured. Below is screen capture displaying the channel group section of the configuration tree after the feature has been configured.
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